B.Sc

The Best option is M.Sc. From Top national institutes like IISc, IISERs, IITs, BHU, University of Delhi, Mumbai University, University of Kolkata, etc.

Generally for B.Sc. Chemistry admission requires a pass in all subjects of 12th grade and If you clear that, then you can get admission for BSc Chemistry in MCC.

It varies among institutes but mostly lies between 50k to 1L rupees per year.

For Chemistry (Foreign authors)
1. Concise Inorganic Chemistry by J. D. Lee
2. Organic Chemistry by Clayden or Organic Chemistry by Morrison and Boyd
3. Physical Chemistry by Atkins (Indian authors)
1. Inorganic Chemistry by Puri Sharma Kalia
2. Organic Chemistry by Bahl and Arun Bahl
3. Physical Chemistry by Puri Sharma Pathania.

Yes, admission for B.Sc. Chemistry requires pass in all subjects of 12th grade in school.

Biotechnology is about applications of Biology with some Physics and Chemistry to develop biological techniques in the real world. Chemistry is about applications of Physics and mathematics in Chemistry to develop both theoretical and experimental methods to improve/create the desired products. Zoology is about the study of diverse animals (all) of diverse environments. It requires knowledge from botany and basic Chemistry and Physics.

Hi. For cutoff information, you can see the below link
https://www.shiksha.com/university/mahatma-gandhi-kashi-vidyapith-mgkvp-varanasi-51559/cutoff
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Hi. https://www.shiksha.com/college/st-francis-college-koramangala-Bangalore-91839
https://www.shiksha.com/university/nmims-university-Bangalore-54311
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Hi. For information you can see below link
https://www.shiksha.com/college/college-of-forestry-ponnampet-Karnataka-other-67949
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Hi. Please specify the college name. Thanks.